package jdbc;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 执行UPDATE语句
 */
public class JDBCDemo3 {
    public static void main(String[] args) {
        //修改密码:根据用户名修改密码
        try (
                Connection connection = DBUtil1.getConnection();
        ) {
            String sql = "UPDATE userinfo " +
                    "SET password='789789' " +
                    "WHERE username='王克晶' ";
            Statement statement = connection.createStatement();
            int num = statement.executeUpdate(sql);
            if (num > 0) {
                System.out.println("修改成功");
            } else {
                System.out.println("修改失败");
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}




